Today I would like to introduce an AI Harness I’ve been working on for the last 2 or 3 months called Fisk AI.
There are many fantastic, all powerful, all featureful AI Harnesses out there like Claude Code, Pi, Hermess, Codex, Open Code, and many more. At the same time there’s been a movement toward creating harnesses that solve just one problem and do so well and safely.
Fisk AI is a Harness framework that allows you to build Specialized AI Agents with just some YAML files.
- Agentic loop in TUI and Shell form
- Easiest possible way to create tools reusing the CLI tools you already have and, optionally, expose those over MCP
- Built-in Memory System
- Built-in Knowledge base (RAG)
Fisk AI can be used entirely locally on your laptop with locally hosted models or can use any AI host that supports the Anthropic API (most do).
Data safety and tool safety is at the forefront, big harnesses have tons of capabilities and love to try and please you.
It is not uncommon to see Claude run half-page long Shell scripts, Python scripts, jq scripts, or combinations of these
in rapid succession. Mistakes are inevitable and so are non-deterministic outcomes. Claude ran Bashism on my ZSH and did
rm -rf /by acccident.
There is no reason to have this power around and a LLM that’s keen to go the extra mile when you have a specific problem to solve, repeatedly and reliably. This is where Specialized AI comes in. Give the AI just the tools and guidance it needs, no generic shell access or ability to run arbitrary code. That’s what Fisk AI is for. Better, safer, and more reliable outcomes for tasks you wish to run regularly with LLM assistance.
Down the line there is a broader goal around enterprise AI and infrastructure Ops. For now I am focussing on getting the libraries and behaviours right, later the libraries that built Fisk AI will become the basis for infrastructure tools onto of the Choria protocol which will bring strong Identity, Authentication, Authorization, and Auditing to Agent-2-Agent communications.
Read the full entry for examples and more details.
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